Raising Black Swallowtail Butterflies for Fun

One of my favorite butterflies to raise is the Eastern Black Swallowtail (Papilio polyxenes). It’s an easy species to attract to your garden. You just need to provide their host plants on which the females lay their eggs, including Dill, Fennel, Parsley, Rue or Golden Alexander and they will find them.

Eastern Black Swallowtail and Host Plants
The beautiful Eastern Black Swallowtail (Papilio polyxenes) butterfly and five of its host plants, including common herbs: Dill, Fennel, and Parsley.
Female Eastern Black Swallowtail ovipositing
Female Eastern Black Swallowtail butterfly ovipositing an egg on Fennel. Look closely at the end of her abdomen. Can you see the cream-colored egg?
Eastern Black Swallowtail Eggs
Eastern Black Swallowtail butterfly eggs on Rue and Fennel leaves.

Once you find the eggs or tiny caterpillars, remove the leaves or pieces of the plant they are on and place them inside a small plastic cup with a lid.  This keeps the tiny caterpillars from escaping.) Do not punch holes.

You can purchase 2-ounce or 9-ounce cups at most grocery stores or click on the link to order them online: https://amzn.to/2BmTy2Y

Keep them inside the cup until after they hatch and for a few days. Then you can place them inside a larger container. I like to use salad containers from fast-food restaurants, but you can use any container with a lid. I use a pushpin to punch air holes in the lid. Line the bottom of the container with a paper towel or coffee filter. Be sure to provide plenty of the host plant leaves on which you found the eggs and/or caterpillars.

Use a pushpin to punch air holes in the lid of the container.
Salad Container Repurposed as a Butterfly Habitat
This easy-to-assemble habitat is nothing more than a fast-food salad container lined with a coffee filter. A few holes punched in the top with a push pin complete the project. These Eastern Black Swallowtail caterpillars are dining on Curly Parsley.
Caterpillar Condo
I call this my caterpillar condo.

Check on your caterpillars each day to make sure they have enough food to feast on. Once they get bigger you will need to empty the fecal droppings (known as frass) each day and add a new coffee filter or paper towel plus fresh food.

Caterpillar Frass
Caterpillars make a mess! Be sure to clean your cage every day to keep your caterpillars healthy and happy.
All Five Caterpillar Instars
Caterpillars shed their skin five times as they grow. These stages are called instars. In this photo, you can see all five instars of the Eastern Black Swallowtail butterfly caterpillar represented on my finger.

When they are ready to pupate, they will crawl to the top of the lid and make their chrysalis. Many people like to put sticks inside the container for them to use, but that is not necessary. However, it can be fun to see the different colors the chrysalis becomes.

Pupating Caterpillars
The caterpillar will crawl to the top and spin a silk girdle on the container lid before it sheds its skin for the final time.
Chameleon-like Pupae
Chameleon-like, the Eastern Black Swallowtail caterpillar will pupate with colors that match its surroundings in order to camouflage itself.

It usually takes about two weeks for the butterfly to emerge from the chrysalis. You can then experience the joy of holding and releasing your new butterfly.

Eastern Black Swallowtail on finger
A newly-emerged Eastern Black Swallowtail butterfly ready for its first flight.

Butterflies and Fruit

Adding a fruit feeder to your butterfly garden can help attract butterflies. Many butterflies do not live on flower nectar alone. Some species prefer, even require, overripe fruit to feed on. Butterflies are particularly fond of sliced, rotting oranges, grapefruit, strawberries, peaches, nectarines, apples, and bananas.

By placing sliced oranges and watermelon inside a suet bird feeder you can make this simple butterfly feeder.

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A couple of Painted Lady (Vanessa cardui) butterflies enjoy sips of sweet fruit juice on a summer afternoon. • Click here or on photo to view a variety of suet baskets.

This easily-assembled butterfly feeder is a clay saucer with sliced cantaloupe that was positioned on top of a hanging plant basket. It was hung in a Plum Tree (Prunus spp.), which happens to be a host plant for the Red-spotted Purple (Limenitis arthemis) seen feeding here.

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A Red-spotted Purple (Limenitis arthemis) butterfly sipping juice from a cantaloupe.

My friend, Jill Streit-Murphy of Building a Butterfly Garden, hangs out a rotten banana in her garden. There are so many butterflies you can’t even see the fruit!

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A mass of Hackberry Emperor (Asterocampa celtis) butterflies marauding a rotting banana still in its peel. • Copyright by Jill Streit-Murphy. Used with permission.

Half an orange on a deck railing attracted this Viceroy (Limenitis archippus) butterfly.viceroy_orange

Keep ants at bay by hanging your butterfly feeder with an ant guard. Whether you use the kind shown here with a small bit of pesticide tucked inside where it doesn’t come in contact with the butterflies or the type that you keep filled with water and a few drops of cooking oil, ant guards are essential equipment when using butterfly feeders.

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An ant guard is an essential equipment when using a butterfly feeder. Click here or on photo to view a variety of ant guards.

Keep ants at bay by hanging your butterfly feeder with an ant guard. Whether you use the kind shown here with a small bit of pesticide tucked inside where it doesn’t come in contact with the butterflies or the type that you keep filled with water and a few drops of cooking oil, ant guards are essential equipment when using butterfly feeders.

A hanging birdbath makes a perfect place to place fruit to attract butterflies. Click here or on photo for a variety of birdbaths.
Spread the message with this “Plant Milkweed T-shirt by Butterfly Lady: https://amzn.to/2PFvZn4